<template>
    <teleport to="#back">
        <div
            class="d-flex justify-content-center align-items-center h-100 w-100 loading-container"
            :style="{backgroundColor: background || ''}"
        >
            <div class="loading-content">
            <div class="spinner-border text-primary" role="status">
                <!-- <span class="sr-only">{{ text || 'loading'}}</span> -->
            </div>
            <p v-if="text" class="text-primary small">{{text}}</p>
            </div>
        </div>
    </teleport>
</template>

<script lang="ts">
import { defineComponent,onUnmounted } from 'vue'

export default defineComponent({
  props: {
    text: {
      type: String
    },
    background: {
      type: String
    }
  },
  setup(){
    const node = document.createElement('div')
    node.id = 'back'
    document.body.appendChild(node)
    onUnmounted(()=>{
        document.body.removeChild(node)
    })
  }
})
</script>

<style>
.loading-container {
  background: rgba(255, 255, 255, .5);/* 半透明背景 */
  z-index: 100;
  position: fixed;
  top: 0;
  left: 0;
}
.loading-container {
  text-align: center;
}
</style>